Marcette: The spore sacs you supplied provide indisputable evidence in favor of my theory! You see, the spores they contain are identical to those which infested the brains of those poor gnats and puks I killed!
Marcette: Ah, yes, it seems I forgot to recommend that you keep your mouth covered, and your nose, ears, and...so on, suitably plugged while slaying these beasts. Yes, well...er...sorry about that! I'm sure there isn't a spore nesting down in your brain even as we speak. Quite sure, yes.
Marcette: Well, you appear to be right as the rain for the time being! A good sign, I should think. Anyway, here is payment for your services─and your silence. No doubt the Gridanians would not take kindly to our slaying forest denizens without proper leave. Should you ever feel guilty about what you've done, just remember this─science! Oh, and should you ever feel unaccountably drawn to humid regions... Er, forget I mentioned it. Science!